Docs: Updated upgrading guide (#8746)

### What problem does this PR solve?


### Type of change

- [x] Documentation Update

docs/guides/upgrade_ragflow.mdx

@@ -72,11 +72,29 @@ To upgrade RAGFlow, you must upgrade **both** your code **and** your Docker imag
    git checkout -f v0.19.1
    ```
 
-3. Update **ragflow/docker/.env** as follows:
+3. Update **ragflow/docker/.env**:
 
-   ```bash
-   RAGFLOW_IMAGE=infiniflow/ragflow:v0.19.1
-   ```
+<Tabs
+  defaultValue="slim"
+  values={[
+    {label: 'slim', value: 'slim'},
+    {label: 'full', value: 'full'},
+  ]}>
+  <TabItem value="slim">
+
+```bash
+RAGFLOW_IMAGE=infiniflow/ragflow:v0.19.1-slim
+```
+
+  </TabItem>
+  <TabItem value="full">
+
+```bash
+RAGFLOW_IMAGE=infiniflow/ragflow:v0.19.1
+```
+
+  </TabItem>
+</Tabs>
 
 4. Update the RAGFlow image and restart RAGFlow: